M5_ Module 5 Review.pdf VERY CORRECT

What would a researcher be certain to note while analyzing a microbial sample? 1. Size and shape 2. Any observable motility 3. Gram status (positive or negative) 4. The presence of any chemical reactions 5. Changes in color localized to the organism or the surrounding media 6. Capture (or draw) images of any of the characteristics described above Which non-selective yet differential agar plate should be used if a Streptococcus sample is suspected? A BAP (blood agar plate) would be the quickest way to identify and classify a potential streptococcus microbe based on its hemolytic properties. What disease can result if a patient with streptococcal pharyngitis goes untreated? Rheumatic fever occurs in approximately 3% of untreated cases of streptococcal pharyngitis, presenting approximately 2-3 weeks post-infection. Streptococcus, E. coli, pseudomonas, and klebsiella are all capable of causing what disease? All of the above foreign microbes are capable of causing septicemia, also known as blood poisoning. What is a facultative anaerobe? A facultative anaerobe is capable of growth under both aerobic (with oxygen) and anaerobic (in the absence of oxygen) condition. How can Staphylococcus be differentially tested? Staphylococcus species are capable of growth in the presence of bile salts A bacterial swab is taken from a patient with impetigo and streaked across an MSA plate. Following incubation at 37C, what will be the color of the agar? The causative agent of impetigo is staph aureus, a Gram-positive bacterium capable of fermenting mannitol. Fermentation will lower the pH of the agar and change the dye color from red to yellow. If a patient were suspected to have tuberculosis (TB), which differential stain would you select and why? To stain for TB, one would utilize an acid-fast stain to best visual the foreign microbe. As a mycobacterium tuberculosis would stain poorly (indeterminate) using the Gram stain. According to the module, which mycobacterium infection will be treated free of charge by the World Health Organization (WHO